Crown LM301A -- Musical Instruments and accessories

Crown LM301A

Crown LM301A Description:

No matter the situation, the elegant LM-301A can meet the need. This silent-operating gooseneck provide superb supercardioid performance and noise rejection. Explosive breath sounds are effectively reduced with the supplied foam 2-Stage Popfilter, while a low-cut switch further reduces breath pops. The LM-301A features an in-line tubular electronics module. The microphone screws onto a standard 5|8"-27 thread. For situations requiring even more isolation from noise, the LM-SM shock mount is supplied at no charge.

Crown LM301A Features:

LM-301A is a supercardioid,electret condenser, miniature dual goose-neck microphone.

It is designed for pro-fessional use on lecterns and for inconspicu-ous miking of musical instruments.

The LM-301A comes in two parts: microphone/cable and a cylindrical electronics housing.

The microphone has a built-in 5/8-inch (15.88-mm)-27 threaded collar that can be screwed onto a mic stand, mic boom or an Atlas AD-12 male flange. Because of the unique design of the mounting collar, the mic cable can be routed either outside or inside the mounting collar.

Because of its supercardioid pickup pattern,the LM-301A rejects more background noise,room reverberation, and feedback than a typi-cal cardioid microphone.

The LM-301A has a smooth, wide-range fre-quency response for natural reproduction of the singing or speaking voice. Very low fre-quencies are filtered out to reduce pickup of mechanically induced noise, room rumble, etc.

The gooseneck adjusts silently.Supplied with the microphone is the WS-9, a highly effective foam pop filter. Its two-stage design greatly reduces explosive breath sounds. A low-cut switch built into the elec-tronics housing further reduces breath pops and handling noise. Optional accessories in-clude the LM-301SMA shock mount adapter.

The microphone output is a male 3-pin XLR-type connector and is balanced, low imped-ance, which allows long cable runs withouthum pickup or high-frequency loss. Superior RFI protection is also provided.

Crown LM301A Operating Instructions:

To route the mic cable inside the mounting device:remove the TA3F connector, push the collar up onto the gooseneck and pull the cable down through the collar. Reattach TA3F.

To route the mic cable outside the mounting device:remove the TA3F connector, push the collar up onto the gooseneck, route the end of the cable inside the collar and slot and pull the cable up through the collar and slot. Reattach TA3F.

Plug the electronics interface into a 3-pin XLR-type cable routed to the audio mixer.4. At the mixer, plug the mic cable from the lectern into an input with 12-48 volt phantom

Crown LM301A Specifications:

Type: Unidirectional condenser.
Element: Electret condenser.
Frequency response (typical): 80 Hz to 15,000 Hz
(110 Hz to 15,000 Hz with low cut). See Fig. 1.
Polar pattern: Supercardioid. See Fig. 2.
Impedance: 150 ohms, balanced. Recommended
minimum load impedance 1000 ohms.
Open-circuit sensitivity: 6 mV/Pa* (-44.5 dB re 1 V/Pa*).
Power sensitivity: -42 dB re 1 mW/Pa*.
Equivalent noise level: 28 dB SPL typical(0 dB=.0002 dyne/cm2), A-weighted.
S/N ratio: 66 dB at 94 dB SPL.
Maximum SPL: 120 dB SPL produces 3% THD.
Polarity: Positive pressure on the diaphragm
produces a positive voltage on pin 2 with respect to pin 3 of the output connector.
Operating voltage: Phantom power, 12 to 48 volts DC, positive voltage on pins 2 and 3 with respect to pin 1 of the output connector.
Current drain: 3.5 mA.
Cable: 10' (3.05-m) 2-conductor shielded 0.1"
diameter cable integral to microphone terminated with Switchcraft TA3F.
Connectors: Switchcraft TA3F on mic cable, TB3M and 3-pin male XLR type in electronics interface.
Materials: Steel housing and gooseneck.
Finish: Black.
Weight: 5.5 ounces (159 grams).
Dimensions: See Fig. 3 on reverse side.
Included accessories: WS-9 foam pop filter (Fig. 4).Optional accessories: WS-5 foam windscreen, LM- 301SMA shock mount adapter and windscreen.
PH-4B phantom power supply (4 channels,AC powered), PH-1A phantom power supply (1 channel, battery or AC adaptor powered), PS-24 24V DC power supply for PH-1A.
*1 pascal = 10 microbars = 10 dynes/cm2= 94 dB SPL.

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